Growth expectations for the U.S. economy are falling as China and Canada announce their next move in the tit-for-tat trade spat with the White House.

President Donald Trump’s blanket 25% tariffs on Mexico and Canada took effect on Tuesday, an extraordinary action aimed at bringing America’s top trading partners to heel. But it threatens to weaken the North American economy,

President Donald Trump delivered on his threat to hit Canada and Mexico with sweeping import levies and doubled an existing charge on China, spurring swift reprisals that plunged the world economy into a deepening trade war.